Thank you for contacting us. The way global events work, the community as a whole is supposed to reach the goal, and not a single player alone, as that would indeed be impossible. With that said, some Global Events are harder than others, but we are doing our best to make them as balanced as possible.

I also find it very frustrating when I do not earn anything for participating in the community events. Twice I have made it to where I would've earned ten rubies and then got nothing because the community missed the goal. I no longer waste my time trying to earn a bigger reward.